Sprinkler



June 28, 1932. w. H. coLEs ET AL 4 SPRINKLER Filed April 25, 1930 2snags-sheet l Z a ze d' f 48 /C/-q/ 44 1 o' o A w. H. GOLES ET AL1,864,892

SPRINKLER `Eune 28, 1932.

Filed April 25, 1959 l 2 Sheets-Sheet 2 lll Patented June 23, 1932 stars'maar '1 RVALTER E. GOLES ANDYBERT J'. NELSON, 0F TROY, OHIO, ASSIGNORS'1"0 THE SKNNER RR-IGATEON CMANY, OF TROY, Oir, A; COHPORATON f? OHIOtioned which is of simple, reliable and conn'V srniivxrinn Applicationfiled April 25,

vThis invention relates tol sprinkling or irrigating apparatus, andparticularly to sprinklers having a sprinkling member adapted to' bemoved within a definite pathV fof travel'during operation.

" 3 ber which controls the direction of the rota'- tion of the drivingmember automatically.

Another object of the invention is to provide a sprinkler havingarotatable sprinkling member with means tor eli'ecting rotary actuationof the sprinkling member, and with simple means entirely enclosedVWithin the sprinkler to reverse the direction of travel of thesprinkling member.

Another object of tiie invention is the p'ro- Y vision in such apparatusof a sprinkling member adapted to be'rotated in reverse directions by amemberoperated by the passage of water through the sprinkler; thesprin-f-kung member being automatically raised to an operative extendedposition by the pressure of the water supplied to the sprinkler andadapted, in extended position, to be oscillated within a definite rangeor' travel.

J.f'lr'iurther objectoi1 the invention is the provision oi a sprinklerof the character menpact construction and devoid oi" gearing, and inwhich all of the control mechanism is conipletely enclosed 'within-thesprinkler rvhous- Ning.

@ther objects and advantages of the in'- descripjtion, the accompanyingdrawings and the appended claims.

ln the drawings, which disclose two pre- A ance with this invention;

,Fig 2 is a. sectional view vtaken on line 2-2 oiZ Fig. 1;

Fig. 3 is a sectional view taken von line" 2-3 of Fig. 1; p

Fig. i isa detailed view in section takenon vention will be apparentfrom the'following i i930. serial No. 447,346.

Fig. 5 is a section'alview'taken on line 5 5 Vof Fig. 2; Fig.v 6 is asectional view taken on the line 6-6 of Fig. '2;' *some of the partsbeing 'reinovedforclearness of illustration;

l1ligsli7 and8 are views'corresponding to Figs. land 2 but showingamodiified forni of valve control; Y Fig. 9W isa sectionon line 9 9 ofFig. l8; and I Fig. 10 is a section on line y10-7-'10 of Fig. 8.

ln the drawings, in kwhich like characters of reference designa-te likeparts throughout the several views thereof, al sprinkler is shown whichis adapted to irrigatey within a definite areal, for example the cornerof a lawn, which presents'an area which the sprinkler may ef'- fectivelycover by a rotational travel of less than 360 degrees.V The sprinklercomprises a housing lor support designated generally by the'numeral 10and comprising a cylindrical shell l1V having a'bottom plate portion12;,

these. parts forming a cup like piece. An ex ternallyV threaded boss 13is provided on the plate portion 12,.and a passage way 14 extendsthrough the boss 13 to provide a path for the,

water, wliich'may be supplied to the sprinkler as byfmeans of a pipethreadedly engaging the boss V13. A housing cover member 0r topdesignated generally by the numeral 17 is provided and comprises a plateportion 18 to providea water tight joint.

An upwardly extending sleeve portion is providedon the Yplate portion18; the top face Q6 "of this sleeve being adapted to be po-v lush withthe surface siti oned substantially Fig. 1 and when of the ground asshown in 'so positioned the balance of the enclosing housing willbelburied below ground'level. A cylindrical-opening is provided'in'theplate 1S forthefs'upport of a sprinkling member designated generally bythe numeral 31 and which comprises a' tube orv sleeve 32 movp n which Ymay be `attached to an outwardly extending Y ably positioned within theopening 30. The bottom end of the tube 32 is provided with an outwardlyextending flange 33 which is adapted to engage the plate 18 and limitthe upward movement of the sprinkling` member 31 when it is moved intooperating position. A plurality of webs 35 extend downwardly from theflange portion 33 and, at their lower ends, are joined to a plate 36;suitable openings 38 being provided between the webs 35 for the passageof water to the interior of the tube 32. rlShe tube 32, webs 5 and plate36 vare preferably formed integrally of a single casting but may, ifdesired, be assembled from separate parts.

The upper end of the member 32 is threaded, as at 40, for reception of acap member 42 which comprises a depending sleeve portion 43 which isadapted to threadedly engage the member 32. A sprinkler nozzle 44 isprovided on the portion 43 and is held thereto as by means of threadedengagement within A the opening 45. rlhe cap 42 is provided with a flatdisk-like top 46 which, when the` sprinkler is in retracted orinoperative position, is adapted to be received within the recess 47provided adjacent the top surface 26 of the sleeve 25. As shown the cap42 is provided with a plurality of openings 45, one of which carries thenozzle 44 while the other opening is provided with a blank plug' 48. Thearea irrigated by the sprinkler is therefore limited to the angulartravel of the single nozzle 44. Additional nozzles may, however, besubstituted for the blank plugs if desired.

lVhen water under pressure is supplied to the sprinkler housing 11 thesprinkler sleeve 32 will be caused to rise to operating position fromits position as shown in Fig. 7, at which time the nozzle 44 will belifted above the level of the top of the supporting housing so that thewater may be distributed from the nozzle. When the supply of water tothe sprinkler is cut oifthe sprinkling member 31 will fall o f its ownweight and the top 46 of the capY 42 will then be positioned iiush withthe top 26 of the supporting housingv in which position none of thesprinkler will be above ground level and it will all be completely outof the xway. Vl/VhenY the sprinkler is in inoperative position a lawnmower may be moved directly over it without encountering any inter-kference. The sprinkler in this position is inconspicuous and does notinterfere with the smooth contour of theground.

A vertical stem or shaft 50 is suitably secured vto the plate 36 of thesprinkling member and projects downwardly therefrom. An actuating membersuch as a laterally eXtend ing arm 53 havinga downwardly extendingportion 54 is also provided on the plate 36 and, as shown, may beattached thereto with the shaft 50 as by means of riveting; 55.

A driving' device is providedin the housing` and is adapted to berotated by the passage of water through the housing' toimpart a rotativeimpulse to the sprinkling` member 3l. As shown this driving devicecomprises the parts and 6l rotatably mounted on the shaft 50 and heldthereon as by means of a collar 5? which is maintained in position onthe shaft by the pin 58. The part 60 is a block upon which is slidablymounted the part 6l. The slidable member 6l comprises'a web por tion 62which lies between the top of the block 60 and the plate 36 and isprovided with an elongated opening' through which the shaft 50 extends.This opening provides for movement of the slidable member longitudinallywith respect to the block 60; the web 62 being provided with down-turnedflanges 65 which engage the sides of the block 60 and are adapt.- ed tomaintain the slidable member 6l in position upon the block. The member6l carries` a weighted portion. 67 at one end and is adapted to be movedoutwardly in the direction of the weighted portion bythe `actionofcentrifuaal force as the driving device is rotated. The opposite end ofthe member 6l is provided with an up-turned flange 68 which, uponoutward movement, is adapted to engage the peripheral surface of theplate 36 to thereby limit the outward movement of the member 6l. Theblock 60 is provided with a weighted portion 70 and in assembling' thedrivingdevice the weighted portion 70 of the block 60 and the weightedportion 67 of the member 6l are positioned oppositely so that during`rotation the device will tend to be balanced. The down-turned portion 54of the actuating` member is positioned in thev path of the rotatabledriving device so that as the device is rotated by water passino; to

the sprinkling member the weighted portion to rebound from Contact withthe arm 54 so that the driving device may continuo'in its rotation.After rebounding from the contactinnf arm 54 the weighted portion 67will be thrown by` centrifugal force to its outward position and in lineto again strike the arm. 54 upon its next rotation. Y The eX- tendinaend 70 of the block 60 is provided'of such length to readily clear thearm 54 as it passes so that only the weighted end 67 will contact withit and, upon each rotation, will impart a slight rotative movement toit. rlhe driving' device is adapted to rotate at a substantial speed sothat it will contact with the arm 54 at frequency which causes anapparent constant movement of the sprinkling` member 31 slowly in thedirection of rotation of the driving, device.

As mentioned above. means are providedv for reversino` the directionroftravel of the 1ero device. The downwardly projecting shaft Y 50 of thesprinkling member is provided with a flexible coupling, suoli as thetongue and slot joint shown at 70, to provide a degree of freedom inaligning the sprinkling member and the valve structure. As shown, adepending cylindricalk sleeve is attached to the plate portion 18 at 76yand vis preferably positioned concentrically with respect to the plate78 prohousing 11. An enclosing valve vides a cover for the open end ofthe sleeve 75 and is suitably attached thereto; the lconnection being awater tight joint. The plate 78 with the sleeve 75 form a partition inthe housing or support and provide with the top plate 18 a waterreceiving chamber 80.l Suitable water passages are'provided in the plate78 so thatl water entering the housing `11 through the passage 14 may beadmitted to4 the chamber or space 80 enclosed by the sleeve 7 5 vand theplate 78 within which the driving device is located and from which watermay flow through the openings 38 into the sprinf kling member. Thepassages, two of which are shown and designated by the numerals 82 and88, are preferably spaced apart and positioned at an angle to the planeof they platey 78 and are preferably positioned tangentially so as toimpart a rotational whirl tothe water in chamber 80. The passages 82 and88 are oppositely arranged so that water admitted through one passagewill have a rotational whirl imparted to it in reverse direction to theflow from the other passage.

A valve structureis provided so that the opening of the passages may becontrolled to provideY aflow of lwater in reverse directions past thedriving device. As shown, the plate 78 is provided with an integrallyformed boss 85 in which are provided adjacent entrance openings 86 and87 for theV corresponding passages 82 and 83. A valve member 90 isarranged so that it can slide over either opening to regulate thedirection of rotation.

water within the water chamber80 by Ymeans of a controlling valve 96 toprovide a pressure diiferential for moving the pistons to actuate thevalve member. Within each cylinder is a passage 97 extending inwardly 1naradial direction, and upon-the cylindrical face of the plug portion 98of the valve member 96 are provided longitudinally extending grooveswhich, upon Vmovement of the valve member, are adapted to connect thepassages 97 to either the compartment 95 or the compartment 80. i

With the valve in the position shown in Fig. 6 for example, the innerend of piston 94 is in communication with the water chamber 80 throughthe groove 81 provided in the cylindrical plug 98. Atv this time thepressure on opposite sides of piston-93 is equalized as the inner sideof its cylinder is in communication with the outer chamber through thegroove 99. The pressure of the water in the water chamber 80. issomewhat less .than that in the outer chamber 95 due to the resistanceof the water vin passing through these chambers,`so it -will be apparentthat with the pressure balanced on opposite side of piston 98, thepiston 94 will be moved to the right, to the position shown in Fig. 6,and this will cause the entrance 87 to be closed so that the water canflow `through the entrance 86. This causes the water in the chamber 80to whirl counter-clockwise as viewed in Fig. 2, and consequently thesprinklingmember will be revolved counter-clockwise as the drivingdevice is moved in that direction by the whirl of the Water.

VThe sprinkling member will be moved in al The spring normally tends tohold the army 102 in either of its eXtreme positions, one of which isshown in Fig. 2. As soon as the arm is moved by the pin to the positionwhere the point 108 is in line with pin 105 and the aXis of the plug 98the spring will snap the plug around until a sto-p surface 106v on' thearm 102 engages a stop surface 107, and in this position the cylinderrfor the piston 93 will be placed in communication with the chamber 80while the cylinder for the piston 94 is placed in communication .withthe outerV chamber 95. When the plug is snapped over as just describedand thepressure on the opposite sidesof piston 93 is unbalanced the twopistons which are connected by the arms 92 will be movedv so that theopening 86 is covered and the opening 87 is uncovered. The rotatablesprinkling member then moves in reverse directionv until the pin 100engages a second stop 109. Then this occurs the plug will be turned,first directly by the pin 100 and later by the spring104, so as to againmove the plug 98 to the position of Fig. 6. As mentioned, this vplug isprovided with suitable grooves so that when it isin one eX- tremeposition one of the cylinders is con# nected to the chamber and theother one is connected to the chamber 95, these connections beingreversed when the plug is moved to its other eXtreme position. It willbe understood that the stops 101 and 109 on the plug 98 may be arrangedso that any desired angular travel of the sprinkling member may takeplace before a reversal in its direction of movement obtains.

The two stop surfaces 101 and 109 preferably form the sides of a pointedcam surface 112 that projects downwardly at one side of the lower end ofthe valve plug 98. When the sprinkling member is in its elevatedoperating position as shown in Fig. 1, the pin 100 is above the cam 112and operates between the two stop surfaces 101 and 109. VTWhen thesprinkling member is in its lowered position the pin 100 is considerablybelow the cam and the sprinkling member at this time might be moved sothat the sprinkling nozzle 44 is pointed towards an area not intended tobe watered, that is, pointed in a direction not within the irrigatingangle of the sprinkler. Vhen the water is turned on under theseconditions and the sprinkling member is raised by the pressure of thewater supplied, the pin 100 in rising would strike the pointed cam 112to move the sprinkling member to within the irrigating angle and woulditself be directed to the proper operating position between the stops101 and 109. The water would enter the water chamber 80 throughwhichever of the two openings 86 or 87 happened to be open at the timeand would start the rotational movementr of the sprinkling member.

Either one or the other of the openings 86 and 87 must be fully open andthe other fully closed at all times due to the pressure dierenceexisting at opposite ends of the passages connecting the chambers 95 and30 during operation of the sprinkler, and due to the snap operationcontrol of the valve plug 98. This `pressure difference existsin adegree proportionate to the water pressure in the chamber 95 and exertedon the valve closing arm 91 to hold it tightly against the seat surfacein covering one of the passage entrances. Consequently a comparativelylarge pressure in the chamber 95, which would tend to press the arm 91rather tightly in place and require a large force to slide it along theseat surface, would result in a larger pressure difference andtheexertion of a larger force, due to the greater difference in pressure,to actuate the pistons. A high pressure in the chamber 95 wouldtherefore have little affect on the valve operating mechanism and itwill be ap-parent that the sprirkler may be operatecl at high pressureor low pressure and yet control the valve parts effe@ tively and in themanner intended. Y

The form of construction shown in Figs.

7, 8, 9 and 10 is generally similar to the one that has just beendescribed. Referring particularly to Figs. 7 and 8 the sprinkling memberis shown in its retracted or inoperative position in the support orhousing 121.V

The support or housing 121`is constructed generally similar to the formfirst described, that is, to provide a water chamber 122 in which theVrotational whirl of the water causes operation of the driving deviceV123.

The plate 124 which partitions the water` chamber 122 from the outerchamber 125 is somewhat different in its construction and supports areversing valve structure which whirling of the water in oppositedirectionsV in water chamber 122. The two passage entrance openings areadapted to be alternately closed by a common valve member 132 pivotallysupported on a stud 133, and adapted to be operated by a valvecontrolling member 134. This valve controlling member 134 is mountedyconcentrically with respect to the sprinkling member rod 135, and isre-v ceived in an opening in the plate 124, suitable retaining meanssuch as the clamp ring 137 being provided to maintain the valvecontrolling member 134 in position. A control pin 140 is provided on thelower end of the rod to control the position of the valve controllingmember 134. This pin operates between the two stop surfaces 141 and 142on the pointed cam 143 of the member 134 and operates the member 134from one eXtreme position to another. A spring 144 connects a point onthe arm 134 to a nearby point on the plate 124 so that the arm will besnapped over quickly as soon as it is pushed to an intermediate positionby the pin 140. The two side arms 145 of the valve control member 134are adapted to engage the valve member 132 to shiftthe valve and holdone of the openings closed while the otherV opening is maintained openedin a manner apparent by referring to Fig. 8. The arm 146 of member 134,which preferably extends perpendicularly to the side arms 145, may beprovided with a weight 146, the inertia of which under action of theyexpanding spring 144 will aid in overcoming the pressure of wateragainst the valve plate of the closed passage, so as to more readilyreverse the valve openings as the spring snaps` the valve controllingmember 134 from an intermediate position to which it yhas been carriedby the pin 140 of the sprinkling member.

The sprinkling member and nozzle will ordinarily rotate at the rate of afew revolutionsper minute while the driving device '1mg comprising theweighted impacting member ioo may rotate many times as fast. It is to beunderstood that by properly proportioning the parts the rate ot rotationot the sprinkling member may be varied as desired, The angular travel ofthe nozzle may also be made to meet various requirements, As the angulartravel ot the nozzle is determined by the angular spacing of the stopfaces on the cam, Which govern the movement of the control valve, it isobvious that the sprinkler may be caused to move any desired degree ofangular travel by properly proportioning the 'angular spacing of thestops. Also by merely removing the control pin the sprinkling member maybe vcaused to rot-ate always in one direction,- the direction beingdependent on the particular valve passage that is open. Y

It Will now be obvious that a sprinkler ot' compact construction isprovided having a simple operating mechanism Which is enclosed Within ahousing in such a Way as to obvia-te undesired leakage during operatingconditions. The sprinkler is adapted to be oscillated through a definiterange of travel Without the use'otl gears or the use oi' any eX- posedmechanism. f

While the Jforms ot apparatus herein described constitutepreferredembodiments oi the invention, it -i-s to be understood that theinvention is not limited to these precise t'orms of apparatus, and thatchanges may be made therein Without departing from the scope ot theinvention Which is delined in the appended claims.

What is claimed is:

l. A sprinkling device oi the class described comprising a rotatablesprinkling member and a Water chamber in communication therewith, meansrotatably supporting said sprinkling member, means tor supplying a llovvof Water rotationally to said Water chamber, a freely rotatable devicein said Water chamber adapted upon rotational A Water iievv to impartrotative step by lstep impulses to said sprinkling member, and means forautomatically reversing they rotational direction o the lovv otl Waterin said vvater chamber after a predetermined movement of said sprinklingmember.

2. A device oi the class described comprisr ing a rotatable sprinklingmember and a Water chamber in communication therewith, means rotatablysupporting said sprinkling member, means tor supplying a flow ot Waterrotationally to said Water chamber, a' freely rotatable device in saidWater chamber adapted upon rotational Water iioW to impart rotativeimpulses to ksaid sprinkling member, means for automatically reversingthe rotational-direction of the flow oi Water in said Water chamberafter a predetermined movement .of said sprinkling member, said lastmeans comprising a control member Within said device operable inaccordance with the movements of the sprinkling member, and valve meansoperated by lsaid'control member.r

3. A device of the class described comprising a sprinkling member and aWater chamber in communication therewith, means rotatably supportingsaid sprinkling member, means for supplying a liovv ofWater'rotationally to said Water chamber, a freely rotatable deviceinsaid Water chamber adjacent said sprinkling member rotatablerelatively to said sprinkling member and adapted upon rotational WaterlloW to impart rotative step by step impulses to said sprinkling member,means for automatically reversing the rotational direction ot the loW otWater in said housing after a predetermined movement of said sprinklingmember, said last means comprising a control member' operable inaccordance With the movements of the sprinkling member, and valve meansadjacent said control member enclosed by saidhousing andv operated bysaid control member.

e'. A sprinkler comprising a rotatable sprinkling member having a Waterpassage therein,l having a nozzle connected, to said Water passage fordirecting a stream of Water at one side of said sprinkling member, a

iouisng portion Within which said sprinkling member is normally locatedin retracted position, said sprinkling member being adapted to be movedduring sprinkling operation by the pressure of the Water to an extendedoperating position With the nozzle above the top ot' said housingportion, a Water chamber to which the said passage is connected, meansWithin said v vater chamber actuated by the movement of the Watertherein to impart controlled slovv rotational movement to saidsprinkling member, reversing means for reversing the direction of flowor' Water in said Water chamber, and means operable in accordance Withthe movements oi said sprinkling member for automatically controllingsaid reversing means.

5. A device of the class described comprising a housing adapted toreceive Water under pressure, a sprinkler* member rotatably supportedWithin said housing, a driving device adapted to be rotated by the llovvof Water through said housing and upon rotation to impart rotative stepby step impulsesto said sprinkler member, and the direction ot rotationof said driving device.

6. A device of the class described comprising a housing adapted toreceive Water under pressure, said housing having means for impartingrotational Whirl to the Water passing therethrough, a sprinkling memberrotatably supported Within said housing, a rotatable driving deviceadapted to be rotated by the lovv of Water through said housing and uponrotation to impart rotative step by step impulses to said sprinklermember, and means for reversing the rotational Whirl of Imeans forreversing through the housing after a Water passing movement of saidsprinkling predetermined member.

7. A device of the class described compris` ing a Water chamber adaptedto receive Water under pressure and having means for impartingrotational Whirl to the Water passing therethrough, a rotatablesprinkling member supported by said Water chamber and adapted to beraised to an extended operating position by Water pressure, a drivingdevice in said Water chamber rotated by the iioW of Water therethroughto impart rotative step by step impulses to said sprinkler member, andmeans for reversing the rotational Whirl of Water passing through theWater chamber after a predetermined movement of said sprinkling member.

8. In a device of the class described, a support adapted to receivewater under pressure, asprinkling member mounted for free rotationalmovement on said support and having a sprinkling nozzle, said sprinklingmember being mounted for vertical movement on said support so as to beraised to an extended position by pressure of the Water supplied to saidsupport, means for imparting step by step rotational movement to saidsprinkling member in reverse directions, and means for limiting therotational travel of the sprinkling member in extended position to apredetermined range of movement.

9. A device of the class described comprising a housing portion adaptedto receive Water under pressure, a rotatable sprinkling member mountedlon said housing portion and adapted to be moved vertically to an er;-tended operating position by pressure of the Water, a driving deviceadapted toy be ro- -tated in said housing portion by flow ot Waterthrough the housing portion to impart rotational movement to thesprinkling member, means positioned entirely Within the housing portionfor reversing the direction of the flow of Water therethrough, and acontrol member for said reversing means attached to said sprinklingmember Within the housing portion, said control member being adapted tobe moved to controlling position with respect to said reversing meansupon movement of said sprinkling means to operating position.

10. A device ot the class described comprising a housing adapted toreceive Water under pressure, a. sprinkling member rotatably supportedvvithin said housing and adapted to be moved vertically to an extendedoperating position by pressure of the Water, a driving device rotatablein said housing `and adapted upon rotation by the flow ot Water throughthe housing to impart rotational movement to the sprinkling member,means positioned entirely Within the housing for reversing the directionof the flow of Water to said driving device, a control member for saidreversing means attached to said sprinkling means, said control memberbeing adapted to be moved to controlling position With respect to saidreversing means upon movement of said sprinkling means to operatingposition, and a control engaging member on said reversing means, saidengaging member being adapted to direct the move# ment of said controlmember to controlling position.

1l. A device of the class described comprising a housing adapted toreceive Water under pressure, a sprinkling member'rotatably supportedWithin said housing, and adapted to be moved vertically to an extendedoperating position by pressure of the Water, a driving device rotatablypositioned adjacent said sprinkling member and adapted upon rotation bythe flow of Water to impart rotational movement to the sprinklingmember, means positioned entirely Within the housing for reversing thedirection of the flow of VWater to said driving device, a control memberattached to said sprinkling member, said control member being adapted tobe movedto controlling position With respect to said reversing meansupon movement of said sprinkling member to operating position, and a cammember on said reversing means, said cam member being adapted to directthe movement of said control member to controlling position.

l2. A device of the class described comprising a supporting housing, asprinkling member rotatably mounted on said housing, driving means insaid housing adapted to be operated by a flow of Water through saidhousing to impart rotational movement to said sprinkling member, andmeans for directing the flow of Water through the housing in reversedirections, said reversing means comprising a plurality of Waterpassages in said supporting housing, valve means for said passages, avalve actuating device, and means for resiliently maintaining said valveactuating device in operating position to maintain one of saidv passagesopen and another closed.

13. A device of the class described com-V prising a Water chamber, arotatable sprinkling member mounted on said Water chamber, means in saidWater chamber adapted to be Qperated by a flow of Water through saidhousing to impart rotational movement to said sprinkling member, andmeans for directing the iiovv of Water through the housing in reversedirections, said reversing means comprising a plurality of separateWater passages in said supporting housing, valve means for saidpassages, a valve actuating device, and means for resilientlymaintaining said valve actuating device in operating position tomaintain one of said passagesv open and another closed.

14. A device of the class described comprising a sprinkling member, ahousing rotatably supporting said sprinkling member, means for supplyinga flow of water rotationally to said housing, a rotatable device in saidhousing adjacent and rotatable. rela-v tively to said sprinkling memberand adapted upon rotational flow of Water through said housing to impartrotative impulses to said sprinkling member, reversing means forreversing the direction of the rotational flow of Water to saidrotatable device, and a control member in said housing operated by saidsprinkling member for operating said reversing means.

15. A device. of the class described comprising a supporting housinghaving a partition providing supporting portion, said partition havingmeans through which the water may pass, a rotatable sprinkling membermounted on said housing and having a sprinkling nozzle, a driving devicerotatableV in said water chamber and adapted to be rotated by the powerof the water supplied through said partition, said device upon rotationbeing adapted to impart rotational movement to said sprinkling member,and means for reversing the direction of liow of the water through saidpartition and to said device.

16. A device of the class described comprising a supporting housingadapted to receive water under pressure, a `partition in said housinghaving means through which the water may pass, a sprinkling memberrotatably mounted on said housing on one side of said partition andhaving a sprinkling nozzle, said sprinkling member being mounted forvertical movement on said housing so as to be raised to an extendedposition by pressure of the water supplied to said housing, a drivingdevice rotatably mounted adjacent said sprinkling member and adapted tobe rotated by the power ot the water supplied to said housing andthrough said partition, said device upon rotation being adapted toimpart rotational movement to said sprinkling member, and means forreversing the direction of flow of the water through said parriition andto said device.

l support adapted to receive Water under pressure and comprising a topmember and a lower cup to which water is supplied, a sprinkling memberrotatably mounted on said top member and having a sprinkling nozzle,said sprinkling member being mounted for vertical movement on said topmember so as to be raised to an extended position by pressure of thewater supplied to said support, a partition in said cup providing awater chamber and an outer chamber, a driving device rotatably mountedadjacent said sprinkling member in said water chamber and adapted to berevolved by the power of the water supplied to said chamber and tostrike said mema water chamber and a fixed In a device of the classdescribed, a"

ber and impart rotative impulses to said sprinkling member duringrevolution of said device, water passage means in said partition forcreating a rotational whirl oi the water in said water chamber, andmeans operated by said sprinkling member for reversing the direction ofrotational whirl of the water passing through the partition.

18. A sprinkler comprising a water chamber, a rotatable sprinklingmember having a water passage therein in communication with said waterchamber and having a sprinkling nozzle, means operated by the passageot' water through said water chamber for rotat ing said sprinklingmember, valve means for reversing the direction of flow through saidwater chamber, a dilierential pressure valve controller for operatingsaid valve means with a force dependent upon the difference between thepressure in said water chamber and the pressure of the water outside oi'said chamber, and means operated by said sprinkling member for governingsaid dilierential pressure valve controller.

19. y A sprinkler comprising a water chamber, a rotatable sprinklingmember on said water chamber having a passage in communicationtherewith, a sprinkling nozzle on said sprinkling member for producing aflow of water laterally at one sidey of said sprinkling member, meansoperated by the passage of water through said water chamber Jforrotating said sprinkling member, valve means for reversing the directionof flow through said water chamber, a piston .connected to said valvemeans, and a water supply valve automatically operable in accordancewith the movements of said sprinkling member for controlling the ilow ofwater to said piston to control the movements of said piston.

20. In a sprinkling device of the class described, in combination, ahousing adapted to receive water under pressure, a rotatable sprinklermember adapted to be raised to an extended operating position by waterpressure, a driving device adapted to be rotated by the flow of waterthrough said housing and upon rotation to impart rotative step by stepimpulses to said sprinkler member, and means for automatically reversingthe rotational direction of the driving device after a predeterminedmovement of said sprinkler member.

In testimony whereof we hereto aiiix our signatures.

WALTER H. GOLES. BERT J. NELSON.

